3644695 has 16 divisors (see below), whose sum is σ = 4681152. Its totient is φ = 2717440.

The previous prime is 3644659. The next prime is 3644699. The reversal of 3644695 is 5964463.

It is a happy number.

It is not a de Polignac number, because 3644695 - 2⁹ = 3644183 is a prime.

It is a d-powerful number, because it can be written as 3² + 6⁵ + 4³ + 4⁶ + 6⁸ + 9 + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4329 + ... + 5101.

It is an arithmetic number, because the mean of its divisors is an integer number (292572).

Almost surely, 2^3644695 is an apocalyptic number.

3644695 is a deficient number, since it is larger than the sum of its proper divisors (1036457).

3644695 is a wasteful number, since it uses less digits than its factorization.

3644695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its digits is 77760, while the sum is 37.

The square root of 3644695 is about 1909.1084306555. The cubic root of 3644695 is about 153.8935425490.

The spelling of 3644695 in words is "three million, six hundred forty-four thousand, six hundred ninety-five".